Air-valve.



J. M. CHAMBERS.

7 AIR VALVE.

APPLICATION FILED OUT. 15, 1912. 1,0?5332B Patented 0ct.14,1913.

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JAMES M. CHAMBERS, 0F TWIN FALLS, IDAHO, ASSIGNOR 0F TWO-THIBDS TO JOHNM.

MAXVI ELL AND CHARLES O. LONGLEY, BOTH 01E TWIN FALLS, IDAHO.

AIR-VALVE.

Specification of Letters Iatent.

Patented Get. 14,1913.

Application filed October 15, 1912. Serial No. 725,839.

To all whom it may concern:

Be it known that I, J AMES M. CHAMBERS, a citizen of the United States,residing at Twin Falls, in the county of Twin Falls and State of Idaho,have invented certain new and useful Improvements in Air-Valves, ofwhich the following is a specification.

My invention relates to air valves of the type used on steam boilers oron conduits such as the radiators included in a steam heating system andone of its objects is to provide a device of simple construction which,normally, provides an outlet for air contained in, the vessel orconduit, with which it is connected and which operates by the heat ofsteam admitted thereto, to close the said outlet after all the air hasescaped and to reopen the same for the purpose of preventing theformation of a partial vacuum, only when by discontinuation of itssupply or other causes, the steam contained in the vessel or conduit isreduced in temperature.

Another important object of my invention resides in the provision ofmeans for the drainage of all water of condensation from the valvehousing the moment it is formed so that the valve can at no time berendered inoperative by the presence of a quantity of water in itshousing, as often occurs in many of the air valves at present in commonuse.

With the above objects in view my invention consists briefly, inproviding a housing which by means of two separate passages, isconnected with the vessel or conduit to which the valve is applied andwhich has an opening for the escape of air into the atmosphere. A valvedisposed to close said opening by its movement in one direction, ismounted to be lifted by the expansion of a body of mercury or otherexpansive fluid which is contained in a vessel disposed within thehousing in spaced relation to its wall. 7

The steam entering the housing and filling the space around the vessel,heats the lat ter and causes the expansion of the fluid containedtherein, which in consequence lifts the valve to its closing positionwith relation to the air outlet. The parts remain in this position untilby a decrease in the temperature of the steam, the vessel is cooled andits contents are contracted when the, valve, impelled by gravity willreassume its normal position and reopen the outlet for either the escapeof air into the atmosphere or for the admission of air to destroy apartial vacuum that may form by the condensation of steam as thesystemcools. The lower one ofthe two passages above referred to, connects thebottom portion of the housing with the radiator for the discharge ofwater of condensation.

An embodiment of my invention as outlined above, is shown in theaccompanying drawings in the two views of which like parts are similarlydesignated and in which,

Figure 1, represents a vertical section through my improved air valve asapplied to a radiator of a steam-heating system, and Fig. 2, a verticalsection taken along the line 2-2, Fig. 1.

Referring to the drawings by numerical characters, 2 designates thecylindrical valve housing provided with a laterally extending,exteriorly threaded nipple 3 by means of which it is connected to theend section 4 of a radiator. A vertically disposed outlet 5 at thelowermost point of the concave bottom portion of the housing, as anexterior screw thread for the application of a nut 6 which has a swivelconnection with a curved conduit 7 and serves to produce a steamtightjoint between the latter and the outlet 5. The opposite end of theconduit is threaded and secured in a correspondingly threaded openingformed in the radiator section at a point below that at which the nipple3 is connected, for the discharge of water of condensation from thevalve housing. The open upper end of the housing is closed by means of ascrew cap 8 provided 'with a central opening which is threaded to securethe upper end of a yoke 9 which thus is suspended within the housing.The yoke 9 consists of an axially bored stem 10 which it its upperextremity is connected in the opening of the cap, and a circular bodyportion 12 which is integrally connected with the stem by means of apair of diametrically opposite arms 13. The open-ended bore 21 of thestem is counter-sunk at its lower end to provide a seat 14 for aconoidal valve 15, the stem 16 of which is loosely fitted in a centralopening 17 in the body portion 12 of the yoke. The body 12 has at itslower surface, an mternally threaded recess into which is secured theupper, correspondingly threaded end of a cylindrical cup 18 Which isthus spended f m the y ke in eeeed rel h to the interior surface of thehousing The cup 18 is partially filledwith a quans tity of mercury orother suitable fluid which when expanded by the influence of heatapplied exteriorly of the cup, acts upon a float piston 19 which issecuredatthe lower end of the Valve stem and is loosely 10 fitted in thevessel 18.

hh a e when in ts helmet eee tien, in whi i eeeeeetee r m it hee is,p-ehde itrem h yehe 9 by me ns at e t 20; Wh eh hei e; e ehr d a thepper nert e 5 Qt i s em, rest heelhe upp r s rf ce t he heely 12. Whenthe va ve is n t is eeettieh; th e'i eh 19 at h eve nd t to e em ei heeete the t e eh fee 9 the fluid in the cup or extends a short distance 2Qbey th Sein it hehe: hy ehe tha th q anti y et fluid epeee l i he Yee eli ete mined y he d ee r f eme ret e et he e e hl sed in th s tem te'whieh he he vely app d 2' Wh le th Part eeein th ie orma Peeition, asabove described, the interior of the valye housing is continuously incommunication With the atmosphere through the openen ed here 2 n t eyelee n Wh a the ee. t a point of eeera en e th he syst m; steam fe admtted ihte the nd i s comprised therein, it'driyes the air before it e dth ehe he utlet in t Y lv hh l it 'ree hee the ast seetie e the ed er eee wh h th et e eei l eel w en, filling h eeee b twe n th Wa of th heh he and t e uter ehrfae 1 the Vesse 8,v t heats t e atte ehees the expansn Of e fl d entein d there n, h e n ee qu e r ses n the. can and ifts heeh'e until it engages its seat at the lower end of he he e 1 and h sleeee t e eemhlu i etie'n bet een th 'redie t an the e heephere- Whe Suseque t y, t e st am in t th adiater i re u e in temperat r e her bydiscontinuation of its upply or other auses, he u d n he we is erehe iemt ly C n ra ted W th h result tha it le e is ower d an he v lve imp lledby gravity,

to is sepa from it unti e disk has in eeme et een th upper ehr e t ebody pe tien 12 of t e ye By the e et h ie ine t e emmhni a en he tt elith nter or ef he radiator and the. ethi e 55 ehj re; he f me en et apartia va ehih e eendeneat en e th s e m s e e d d and. he Wat r o eheneatieh terme hr he eelinge t t st m. hi th valve he eia i d ained heetrem threue the ee li hiit 1 69 nd disehaee ed em. the y em in th usualmanner. t I wi l he ah e zved tha af er the flui in h r ssel has c mmened te expemi, the upwa d mo ment at the alve i a elet ed by, the pessure the team gain t the lower surface of the disk, thus effecting asubstantially instantaneous closing of the outlet ei'a'aa preventing ateescape 'of steam through the saine; The'provisionof the two passagesbetween the radiator and the Valve 7 housing balances the pressureWithin the latter and thus allows an unobstructed flow of Water ofcondensation through the conduit 7. The Value mechanism being suspendedin its entirety from the cap may be readily 75 removed from the housingfor the purpose et eeP etieh er eee 'ehe it i eth ,ie lhrh ee e' tee ethe de j e them he eeh tee he e use e teel te t er metha e. ih he e eeieh ee eh e e ehi (it H v .i ,r talhe 'ihethew 1e tlt 'l tttw ezt eete're wh eh the rethlee te e ef eh eeehee hh tele,

te .e he heeeee ehe hee ehhli ele' eee H g thus de ribegl my inyentionWhat ef eiee te e ee eeLea eeeet j h eir va ve t he her te ele etihedetheti e hehethe' eeeh i we end ee he mean h he e heeette e-t -te interir with a radiator or the like, a coycr 'eehhe e. u -h the he efi e lte vv M he and avi g eu-tlet. a met-t ary e pee e t em he n rat e face t eh-Qdy 0e the 1 eeid' 'l ee a ehn lt en hr which the, Y sel iscltachablysuspended from covet; and which has a Valve seat in communicath w t sa d utl t; vale l l'epte a e141- said valve seat a). close theoutlet and no ma y eh e nl l m eat- 1. eeeeeeeee; end 'e'tl ieeee el nsaid e l end Ceteete w h ee 'v l e t me e same ihte n emen itht e velv'eeee l t ei ,9

a y th e Peh'eiY ae ieh 9 -he'eei h da (rt mercury.

2-. he h v l e eat th a e et d eeri e ee e he heaet e; me at tehepe ndehet ev eeee, fer the ee ee tien e the hter e Wlth e ta eteee the i e wereth ehlae hh etest th he ho s te e i e eeeh het e ite ha e e e een eeiee Ptl t a rais eea et 'ih the sets eee tuhe he ihe ai' -eae eeextendi e h the ame h eeh t e'eeel ele ae e ehe heede eal sa d yeke nepee d e atiea e t e ht eiee ehri-te e. etthe hehethe a' elve. adapted teeethe g he f ea e iiet teeth he interior of the housing into. the saidpassage by engagement with the sleuth theteet. a val e n 1. 9.3 .3eeeele exteeeeded eheat th sa meht a fi ffih eei he head et' thetehh hee et eeeel, and; a leet h et Yeee l; and eeeee ted: with said rel-Y teemete he same in e gagem nt with. ea e th hth when. t tted hr th QXPQILTeire eetieh Qt eiet h ly t mere uy 3-, h the Yel e hit the. eh tee eesleeeeibed eehlhti ihg hehe hg ating n apehthre and means for theconnection of its interior With a radiator or the like, a yoke connectedin said aperture and having a passage for the outlet of fluid from theinterior of the housing and, opposite to the mouth of said passage, aseat for the suspension of a valve a valve adapted to close said passageby engagement With its mouth, a disk connected With said valve, andnormally resting upon said seat, the said yoke being constructed toadmit fluid within the housing, to the said seat for action upon thesaid disk, a mercury vessel suspended from the yoke in spaced Copies ofrelation to the interior surface of the housing, a body of mercury insaid vessel, and a 15 float in said vessel, connected with said valvefor moving the same in engagement With the mouth of said passage, Whenlifted by expansion of the said body of mercury.

In testimony whereof I have affixed my 20 signature in presence of twoWitnesses.

JAMES M. CHAMBERS.

Witnesses:

C. O. LONGLEY, HARRY J. BENOIT.

this patent may be obtained for five cents each, by addressing theCommissioner of Patents,

Washington, D. G.

